Greed couldn't really do promises. It was within his nature to find new things. "Admittedly I don't want to give you up quickly." He wanted to hang onto this one for a little while. "But...most wear out." That was if he didn't get bored first. He did want to try because she was so exotic for him with these 'feelings' she carried. It was for personal gain with him (of course it was) but he wanted to try.